Steam superheater for locomotives



Q 1 1 I May 927 l. A. SEIDERS STEAM SUPERHEATER FOR LQCOKOTIVES 3 sheetssheet 1 Filed April 14, 1924 INVENTOR jragz'muifl zliera I 7149.4TTORNEY May 17, 1927;

I. A. SEIDERS STEAM sursanmmn FOR LOCOMOTIVES Filed April 14. 1924 :sSheets-Sheet 2 INVENTOR lI/JATTORNEY May 1927' I. A. SEIDERS STEMSUPERHEATER FOR LQCOIOTIVES Filed A ril 14. 1924 3'Sheets-$heet 3 Ill/5ATTORNEY ell) Patented May 17, 1927.

AUINITED STATES 1,629,005 PATENT FOFFICE.

' i IRWIN A. SEIDERS, OF READING, PENNSYLVANIA.

STEAM SUPERHEATER FOR LOCOMOTIVES.

Application filed April 14, 1924. Serial No. 70 ,394.

My invention relates to locomotiveboilers and has for its object toprovide animproved steam superheater construction for such boilersespecially designed to provide an exceedingly simple construction ofsuperheater headers which can be cast preferably in two pieces and withlittle or no loss in the foundry. The entire advantage which I have inview'is a material shortening of the end extensions of the superheatertubes and my construction also makes it practicableto use but two sizesor at most but three sizes of superheater tubes. Still another advantageof my construction Is.

" tofore used, and still another advantage of my construction lies inthe provision of, an exceedingly simple clamp for holding the ends ofthesuper-heater tubes in contact with the headers.

The nature of my improvements will be best understood asdescribed inconnection with the drawings in which theyare illustrated and'in which-Figure 1 is a sectional elevation of the front end of a locomotiveembodying my improvements, the section being taken as on the line 1-1 ofFig. 3.

Figure 2 is a cross sectional elevation on the line 22 of Fig. 1.

Figure 3, a cross sectional elevation taken partly on the line 3-3 andpartly on the line 3-3 of Fig. 1.

Figure l is a front elevation of the sectional plates secured to thefront of the front header, as shown in Fig. 1.

Figure is a section on the line 55 of Fig. l

Figure 6 is a sectional view showing the ends of a superheater unitsecured in lace on the header. sections by means 0 the forked clampwhich I prefer to employ, and Figure 7 is a cross section on the line 77of Fig. 6.

A indicates the shell of the boiler and A the tube sheet secured tothefront end of the shell. B, B,,etc. are the usual small diameter firetubes extending through the boiler front tube sheet to the back tubesheet and, in accordance with my invention, disposedin concentric arcs,the flues B being staggered in arrangement with reference to shown, andconnecting through the joint.

F with the steam pipe E connected with the .rearheader, indicated at E.E is the front header. The two headers E and E are of are shaped formand preferably nearly circular, as shown, being. supported on bracketsG, G, secured to the lower part of the front end, of the boiler shell.The front and rear headers are preferably cast separate from each otherand secured together by bolts, as indicated at E From the lower portionsof the front header at points below the center line of the boiler Iprovide steam pipes indicated at E E which may and should extend" outhorizontally from the header as it is shown in Fig. 1, to a point infront of the screen P; connected with the front end of these pipes E arethe curved pipes e which lead to the cylinders not shown.

Joints are made between the header section and the ends C of thesuperheater tubes, as best shown in Figs. 6 and 7 The spherical heads Cabut against seats at the outer ends of the parts indicated at e and ein the front and rear headers. and are abutted against seats H, H, whichare Supported on a forked clamping plate I, having forked ends, asindicated at I and secured in place by a bolt J, extending between theabutting faces of the headers, as shown in Figs. 1 and 6.

K is the shell of the smoke box of the locomotive, and L, L L L aresectional plates secured to the front header, as shown. The plates L andL L are readily removable to permit of the withdrawal and insertion ofsuperheater ends. M indicates a damper, the pivot units of which arehinged end extensions C of only three sizes,

where only two concentric rows ct super indicated at O and a screenindicated at- P..

K is the usual exhaust pot, K the stack and K the usual mixing nozzle- Qis a plate secured on the brackets G and extending back to the tubesheetA a certain number of the small tubes B lying below it, while the spacelying above the plate Q and within the headers E, E", forms a fine whichis controlled by the damper M. R and R are the usual screens.

It will be obvious that the illustrated construction provides in the areshaped headers E and E exceedingly simple castings and, by reason of theextension of these headers into the lower part of the boiler she'll,makes it feasible to employ short steam pipes E It will also be obviousthat the are shaped suspension of the superheater tiues B B Pr", and thestaggering of these fines with reference to each other makes it feasibleto employ super-heater units C witii ant heater tines are employed, oionly two sizes, and it also makes it feasible tor the superheater tubeends to extend in approximately radial planes to their points ofconnection with the superheater headers, so that each superheater endcan be independently removed without necessitating the displace ment ofany other. The coupling of the superhcater tube ends to the headersections by the forked plates 1, as shown in Fig. 6, makes'it verysimple to connect ordisconnectthese parts and to permit the ire-dressing or re-grinding oi the spherical heat C ll here this is necessary,the removably sectional plates D, if, if, when removed, give a "Jess tothe individual super-heating ends in a convenient and etlective mannerand these plates, in connection with the plate Q and the headers, form aflue, the flow through which is controlled by the damper M, so that whenthe engine is not using steam, a flow of furnace gases through thesuperheater lines can be out 01f so as toprotect the superheater tubeends from superheating.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. In combination with a locomotive boilor, superheater fines extendinglongitudinally through the boiler and arranged in concentric circulararcs, arc shaped superheater headers of greater diameter than the outerrow of superheater l'lues secured in front of the boiler and superheatertubes extending into the lines and having laterally extending endextensions secured to the headers.

2. In combination with a locomotive boiler, super-heater flues extendinglongitudinally through the boiler and arranged in concentric circulararcs, are shaped superheater headers of greater diameter than the outerrow of superheater flues secured in front of the boiler and extendingdown on each side thereof below the center line of the boiler,superheatertubes extending into the lines and having lateral endextensions secured to the headers and steam pipes con nected to thelower portions of the outer headers.

in combination with a locomotive boiler, concentdc rows of superheaterlines arranged in staggered relation to each other, are shapedsuperheater headers, concentric with but of greater diameter than therows oi tines, secured in front of the boiler and superheater tubesextending into the fines and having lateral end extensions connect ingthem with the headers in approximately radial lines.

4.. In combination with a locomotive boiler, concentric rows ofsuperheater fines arranged in staggered relation to each other, areshaped superheater headers each forming a separate unit, concentric withbut of greater diameter than the rows of fines, se-

cured in front of the boiler and superheater tubes extending into thelines and having lateral end extensions connecting them with the headersin approximately radlal lines.

IRYVIN A. SEIDER-S.

